Hermite–Gaussian beams with sinusoidal vortex phase modulation

Guanxue Wang; Yue Li; Xinzhi Shan; Yu Miao; Xiumin Gao

doi:10.3788/COL202018.042601

Journals >Chinese Optics Letters >Volume 18 >Issue 4 >Page 042601 > Article

Chinese Optics Letters
Vol. 18, Issue 4, 042601 (2020)

Hermite–Gaussian beams with sinusoidal vortex phase modulation

Guanxue Wang, Yue Li, Xinzhi Shan, Yu Miao, and Xiumin Gao^*

Author Affiliations

School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

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DOI: 10.3788/COL202018.042601 Cite this Article Set citation alerts

Guanxue Wang, Yue Li, Xinzhi Shan, Yu Miao, Xiumin Gao. Hermite–Gaussian beams with sinusoidal vortex phase modulation[J]. Chinese Optics Letters, 2020, 18(4): 042601 Copy Citation Text

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Experimental device. λ/2, half-wave plate; λ/4, 1/4-wave plate; lens with focal length of 100 mm; SLM, space light modulator; CCD, charge coupled device.

Fig. 1. Experimental device.

λ / 2

, half-wave plate;

λ / 4

, 1/4-wave plate; lens with focal length of 100 mm; SLM, space light modulator; CCD, charge coupled device.

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Simulation and experimental comparison. (a)–(d) are simulation plots, and (e)–(h) are experimental plots. (a), (e) m=3, n=3; (b), (f) m=4, n=6; (c), (g) m=5, n=5; (d), (h) m=5, n=8.

Fig. 2. Simulation and experimental comparison. (a)–(d) are simulation plots, and (e)–(h) are experimental plots. (a), (e)

m = 3

n = 3

; (b), (f)

m = 4

n = 6

; (c), (g)

m = 5

n = 5

; (d), (h)

m = 5

n = 8

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Fig. 3. When the vortex parameter

l = 5

, the HG beam pattern is vortex modulated by different orders. (a)

m = 1

n = 1

; (b)

m = 2

n = 2

; (c)

m = 3

n = 4

; (d)

m = 4

n = 5

; (e)

m = 5

n = 5

; (f)

m = 6

n = 4

; (g)

m = 7

n = 2

; (h)

m = 8

n = 3

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Fig. 4. Diagram of HG beams with

m = 5

n = 8

, and different topological charge

l

. (a)

l = 2

, (b)

l = 3

, (c)

l = 4

, (d)

l = 5

, (e)

l = 6

, (f)

l = 7

, (g)

l = 8

, and (h)

l = 10

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Fig. 5. Sinusoidal vortex modulated HG beam diagram with different-order vortex parameters,

l = 5

. (a)

m = 1

n = 1

; (b)

m = 2

n = 2

; (c)

m = 3

n = 4

; (d)

m = 4

n = 5

; (e)

m = 5

n = 5

; (f)

m = 6

n = 4

; (g)

m = 7

n = 2

; (h)

m = 8

n = 3

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Fig. 6. Sinusoidal vortex modulated HG beam with

m = 5

n = 8

, and different topological charge

l

. (a)

l = 2

, (b)

l = 3

, (c)

l = 4

, (d)

l = 5

, (e)

l = 6

, (f)

l = 7

, (g)

l = 8

, and (h)

l = 10

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Fig. 7. Data analysis diagram of sinusoidal vortex modulation with parameters

m = 5

n = 8

, and

l = 8

. (a) Light intensity distribution collected by CCD. (b) A cross section perpendicular to the

x

axis. (c) A cross section perpendicular to the

y

axis. (d) Three-dimensional intensity distribution.

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Guanxue Wang, Yue Li, Xinzhi Shan, Yu Miao, Xiumin Gao. Hermite–Gaussian beams with sinusoidal vortex phase modulation[J]. Chinese Optics Letters, 2020, 18(4): 042601

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